diff --git a/cmd/root.go b/cmd/root.go
index 3eca040..4cd0ebd 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -19,7 +19,7 @@ import (
 	gitignore "github.com/sabhiram/go-gitignore"
 	log "github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
-	"gopkg.in/yaml.v3"
+	"go.yaml.in/yaml/v4"
 
 	"github.com/nektos/act/pkg/artifactcache"
 	"github.com/nektos/act/pkg/artifacts"
diff --git a/go.mod b/go.mod
index 60f152f..4aee2fc 100644
--- a/go.mod
+++ b/go.mod
@@ -33,8 +33,8 @@ require (
 	github.com/stretchr/testify v1.9.0
 	github.com/timshannon/bolthold v0.0.0-20210913165410-232392fc8a6a
 	go.etcd.io/bbolt v1.3.9
+	go.yaml.in/yaml/v4 v4.0.0-rc.2
 	golang.org/x/term v0.18.0
-	gopkg.in/yaml.v3 v3.0.1
 	gotest.tools/v3 v3.5.1
 )
 
@@ -88,4 +88,5 @@ require (
 	golang.org/x/tools v0.13.0 // indirect
 	gopkg.in/warnings.v0 v0.1.2 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
diff --git a/go.sum b/go.sum
index bdd044f..6ec93d5 100644
--- a/go.sum
+++ b/go.sum
@@ -191,6 +191,8 @@ github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5t
 go.etcd.io/bbolt v1.3.6/go.mod h1:qXsaaIqmgQH0T+OPdb99Bf+PKfBBQVAdyD6TY9G8XM4=
 go.etcd.io/bbolt v1.3.9 h1:8x7aARPEXiXbHmtUwAIv7eV2fQFHrLLavdiJ3uzJXoI=
 go.etcd.io/bbolt v1.3.9/go.mod h1:zaO32+Ti0PK1ivdPtgMESzuzL2VPoIG1PCQNvOdo/dE=
+go.yaml.in/yaml/v4 v4.0.0-rc.2 h1:/FrI8D64VSr4HtGIlUtlFMGsm7H7pWTbj6vOLVZcA6s=
+go.yaml.in/yaml/v4 v4.0.0-rc.2/go.mod h1:aZqd9kCMsGL7AuUv/m/PvWLdg5sjJsZ4oHDEnfPPfY0=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
diff --git a/pkg/jobparser/evaluator.go b/pkg/jobparser/evaluator.go
index 80a1397..2a95008 100644
--- a/pkg/jobparser/evaluator.go
+++ b/pkg/jobparser/evaluator.go
@@ -6,7 +6,7 @@ import (
 	"strings"
 
 	"github.com/nektos/act/pkg/exprparser"
-	"gopkg.in/yaml.v3"
+	"go.yaml.in/yaml/v4"
 )
 
 // ExpressionEvaluator is copied from runner.expressionEvaluator,
diff --git a/pkg/jobparser/interpeter.go b/pkg/jobparser/interpeter.go
index 3d121ad..e565781 100644
--- a/pkg/jobparser/interpeter.go
+++ b/pkg/jobparser/interpeter.go
@@ -3,7 +3,7 @@ package jobparser
 import (
 	"github.com/nektos/act/pkg/exprparser"
 	"github.com/nektos/act/pkg/model"
-	"gopkg.in/yaml.v3"
+	"go.yaml.in/yaml/v4"
 )
 
 // NewInterpeter returns an interpeter used in the server,
diff --git a/pkg/jobparser/jobparser.go b/pkg/jobparser/jobparser.go
index 9092d85..962a26b 100644
--- a/pkg/jobparser/jobparser.go
+++ b/pkg/jobparser/jobparser.go
@@ -6,7 +6,7 @@ import (
 	"sort"
 	"strings"
 
-	"gopkg.in/yaml.v3"
+	"go.yaml.in/yaml/v4"
 
 	"github.com/nektos/act/pkg/exprparser"
 	"github.com/nektos/act/pkg/model"
diff --git a/pkg/jobparser/jobparser_test.go b/pkg/jobparser/jobparser_test.go
index e510500..ed91876 100644
--- a/pkg/jobparser/jobparser_test.go
+++ b/pkg/jobparser/jobparser_test.go
@@ -8,7 +8,7 @@ import (
 
 	"github.com/stretchr/testify/require"
 
-	"gopkg.in/yaml.v3"
+	"go.yaml.in/yaml/v4"
 )
 
 func TestParse(t *testing.T) {
diff --git a/pkg/jobparser/model.go b/pkg/jobparser/model.go
index ae71698..c9ff0c3 100644
--- a/pkg/jobparser/model.go
+++ b/pkg/jobparser/model.go
@@ -5,7 +5,7 @@ import (
 	"fmt"
 
 	"github.com/nektos/act/pkg/model"
-	"gopkg.in/yaml.v3"
+	"go.yaml.in/yaml/v4"
 )
 
 // SingleWorkflow is a workflow with single job and single matrix
@@ -50,18 +50,17 @@ func (w *SingleWorkflow) SetJob(id string, job *Job) error {
 	m := map[string]*Job{
 		id: job,
 	}
-	var buf bytes.Buffer
-	encoder := yaml.NewEncoder(&buf)
-	encoder.SetIndent(2)
-	encoder.Encode(m)
-	encoder.Close()
+	buf, err := yaml.Marshal(m)
+	if err != nil {
+		return err
+	}
 
 	node := yaml.Node{}
-	if err := yaml.Unmarshal(buf.Bytes(), &node); err != nil {
+	if err := yaml.Unmarshal(buf, &node); err != nil {
 		return err
 	}
 	if len(node.Content) != 1 || node.Content[0].Kind != yaml.MappingNode {
-		return fmt.Errorf("can not set job: %s", buf.String())
+		return fmt.Errorf("can not set job: %s", string(buf))
 	}
 	w.RawJobs = *node.Content[0]
 	return nil
diff --git a/pkg/jobparser/model_test.go b/pkg/jobparser/model_test.go
index 079c32d..833756b 100644
--- a/pkg/jobparser/model_test.go
+++ b/pkg/jobparser/model_test.go
@@ -9,7 +9,7 @@ import (
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"gopkg.in/yaml.v3"
+	"go.yaml.in/yaml/v4"
 )
 
 func TestParseRawOn(t *testing.T) {
diff --git a/pkg/model/action.go b/pkg/model/action.go
index 6031cec..316d9d7 100644
--- a/pkg/model/action.go
+++ b/pkg/model/action.go
@@ -5,7 +5,7 @@ import (
 	"io"
 	"strings"
 
-	"gopkg.in/yaml.v3"
+	"go.yaml.in/yaml/v4"
 )
 
 // ActionRunsUsing is the type of runner for the action
diff --git a/pkg/model/workflow.go b/pkg/model/workflow.go
index f93623f..7d5ca25 100644
--- a/pkg/model/workflow.go
+++ b/pkg/model/workflow.go
@@ -10,7 +10,7 @@ import (
 	"strings"
 
 	log "github.com/sirupsen/logrus"
-	"gopkg.in/yaml.v3"
+	"go.yaml.in/yaml/v4"
 
 	"github.com/nektos/act/pkg/common"
 )
diff --git a/pkg/runner/expression.go b/pkg/runner/expression.go
index 2e3152b..894ebbf 100644
--- a/pkg/runner/expression.go
+++ b/pkg/runner/expression.go
@@ -16,7 +16,7 @@ import (
 	"github.com/nektos/act/pkg/container"
 	"github.com/nektos/act/pkg/exprparser"
 	"github.com/nektos/act/pkg/model"
-	"gopkg.in/yaml.v3"
+	"go.yaml.in/yaml/v4"
 )
 
 // ExpressionEvaluator is the interface for evaluating expressions
diff --git a/pkg/runner/expression_test.go b/pkg/runner/expression_test.go
index 5cc2f7b..0bc0bf0 100644
--- a/pkg/runner/expression_test.go
+++ b/pkg/runner/expression_test.go
@@ -11,7 +11,7 @@ import (
 	"github.com/nektos/act/pkg/exprparser"
 	"github.com/nektos/act/pkg/model"
 	assert "github.com/stretchr/testify/assert"
-	yaml "gopkg.in/yaml.v3"
+	yaml "go.yaml.in/yaml/v4"
 )
 
 func createRunContext(t *testing.T) *RunContext {
diff --git a/pkg/runner/run_context_test.go b/pkg/runner/run_context_test.go
index af0cd4e..7a7ffba 100644
--- a/pkg/runner/run_context_test.go
+++ b/pkg/runner/run_context_test.go
@@ -15,7 +15,7 @@ import (
 
 	log "github.com/sirupsen/logrus"
 	assert "github.com/stretchr/testify/assert"
-	yaml "gopkg.in/yaml.v3"
+	yaml "go.yaml.in/yaml/v4"
 )
 
 func TestRunContext_EvalBool(t *testing.T) {
diff --git a/pkg/runner/runner_test.go b/pkg/runner/runner_test.go
index 2005932..a73ab5f 100644
--- a/pkg/runner/runner_test.go
+++ b/pkg/runner/runner_test.go
@@ -15,7 +15,7 @@ import (
 	"github.com/joho/godotenv"
 	log "github.com/sirupsen/logrus"
 	assert "github.com/stretchr/testify/assert"
-	"gopkg.in/yaml.v3"
+	"go.yaml.in/yaml/v4"
 
 	"github.com/nektos/act/pkg/common"
 	"github.com/nektos/act/pkg/model"
diff --git a/pkg/runner/step_action_local_test.go b/pkg/runner/step_action_local_test.go
index c4b6345..8a80a1c 100644
--- a/pkg/runner/step_action_local_test.go
+++ b/pkg/runner/step_action_local_test.go
@@ -12,7 +12,7 @@ import (
 	"github.com/nektos/act/pkg/model"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/mock"
-	"gopkg.in/yaml.v3"
+	"go.yaml.in/yaml/v4"
 )
 
 type stepActionLocalMocks struct {
diff --git a/pkg/runner/step_action_remote_test.go b/pkg/runner/step_action_remote_test.go
index 9dcc338..1c3a37b 100644
--- a/pkg/runner/step_action_remote_test.go
+++ b/pkg/runner/step_action_remote_test.go
@@ -10,7 +10,7 @@ import (
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/mock"
-	"gopkg.in/yaml.v3"
+	"go.yaml.in/yaml/v4"
 
 	"github.com/nektos/act/pkg/common"
 	"github.com/nektos/act/pkg/common/git"
diff --git a/pkg/runner/step_test.go b/pkg/runner/step_test.go
index cdb870e..e288252 100644
--- a/pkg/runner/step_test.go
+++ b/pkg/runner/step_test.go
@@ -9,7 +9,7 @@ import (
 	log "github.com/sirupsen/logrus"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/mock"
-	yaml "gopkg.in/yaml.v3"
+	yaml "go.yaml.in/yaml/v4"
 )
 
 func TestMergeIntoMap(t *testing.T) {